Augmentin 457 Dose Calculator
Use this page when the bottle or search says Augmentin 457. It maps the exact 400 mg/57 mg per 5 mL product to the main Augmentin calculator strength.
Source alignedOfficial label plus pediatric dosing safety checks.
Calculator handoffUses the parent medication calculator with presets.
Review policyHow PedsCalc reviews dosing pages
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Use the prescribed plan first
This page explains formulation-specific dose support. It does not choose the child's medication, indication, dose target, frequency, duration, maximum dose, or allergy plan.
Accuracy boundary
The formula and example are for concentration conversion after a clinician has chosen the dose. The linked calculator still requires weight entry and final clinical verification.
Quick answer
- Augmentin 457 contains 400 mg amoxicillin plus 57 mg clavulanate per 5 mL.
- The calculator strength should be 400/5 because dose math is based on the amoxicillin component.
- The same mL volume is not interchangeable with Augmentin 228 or ES-600.
- Confirm dose target, frequency, duration, and max dose before measuring.
Augmentin 457 formula
mL per dose = amoxicillin mg per dose / 80 mg per mL. The 80 mg per mL comes from 400 mg amoxicillin in 5 mL.
- The 457 product is commonly searched as a total formulation strength, but the dosing basis is the amoxicillin component.
- Changing formulation changes clavulanate exposure and measured volume.
Augmentin 457 quick conversion
2.5 mL
200 mg amoxicillin + 28.5 mg clavulanate
5 mL
400 mg amoxicillin + 57 mg clavulanate
7.5 mL
600 mg amoxicillin + 85.5 mg clavulanate
10 mL
800 mg amoxicillin + 114 mg clavulanate
Worked example
- Example only: a 20 kg child has a prescribed Augmentin plan of 45 mg/kg/day divided twice daily.
- 20 kg x 45 mg/kg/day = 900 mg/day of the amoxicillin component.
- 900 mg/day / 2 doses/day = 450 mg amoxicillin per dose.
- 450 mg / 80 mg per mL = 5.625 mL per dose of Augmentin 457.
Safety checks before measuring
- Verify the bottle says 400 mg/57 mg per 5 mL before using this setup.
- Do not substitute another Augmentin formulation mL-for-mL.
- Review allergy history and urgent reaction symptoms before giving antibiotic doses.
Frequently asked questions
It refers to 400 mg amoxicillin plus 57 mg clavulanate per 5 mL, for a total labeled strength of 457 mg per 5 mL.
Use 400/5 for the amoxicillin component, then keep the exact formulation and prescription instructions in view.